PoE also has Personal loot system and also has a really good trade system.
So things like “personal loot will ruin trading” are false.
Also all the modern aRPGs have personal loot as well , hardcore ones and casual ones… not only D3.
And some people who claim to be “hardcore” have only played diablo… and nothing else. That’s pretty casual if you ask me…
Play PoE and then we talkin’ about hardcore…